{データベースの作成その他}tnsnames.oraの送受信バッファを設定

https://docs.oracle.com/cd/F19136_01/netrf/local-naming-parameters-in-tns-ora-file.html#GUID-A92344BD-2A8B-445D-BEF7-82141A523C3A

cdh
cd network
cd admin

cat tnsnames.ora

vi tnsnames.ora

orcl_1=
 (DESCRIPTION=
  (ADDRESS=(PROTOCOL=tcp)(HOST=mmm111.example.com)(PORT=1621)
        (RECV_BUF_SIZE=87380)(SEND_BUF_SIZE=87380))
  (CONNECT_DATA=
     (SERVICE_NAME=orcl.example.com)))

sqlplus system/oracle@orcl_1